CVE-2026-32757

Admidio is an open-source user management solution. In versions 5.0.6 and below, the eCard send handler uses a raw $_POST['ecard_message'] value instead of the HTMLPurifier-sanitized $formValues['ecard_message'] when constructing the greeting card HTML. This allows an authenticated attacker to inject arbitrary HTML and JavaScript into greeting card emails sent to other members, bypassing the server-side HTMLPurifier sanitization that is properly applied to the ecard_message field during form validation. An attack can result in any member or role receiving phishing content that appears legitimate, crossing from the web application into recipients' email clients. This issue has been fixed in version 5.0.7.

• CWE-79

• https://github.com/Admidio/admidio/releases/tag/v5.0.7Release Notes
• https://github.com/Admidio/admidio/security/advisories/GHSA-4wr4-f2qf-x5wjExploit, Mitigation, Vendor Advisory

Published

Mar 20, 2026

Last Modified

Jun 17, 2026

Status

Analyzed

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
• Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
• PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
• AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.

• CVE-2026-32751SiYuan is a personal knowledge management system. In version…9
• CVE-2026-32752FreeScout is a free help desk and shared inbox built with PH…8.1
• CVE-2026-32753FreeScout is a free help desk and shared inbox built with PH…5.4
• CVE-2026-32754FreeScout is a free help desk and shared inbox built with PH…9.3
• CVE-2026-32755Admidio is an open-source user management solution. In versi…5.7
• CVE-2026-32756Admidio is an open-source user management solution. Versions…8.8
• CVE-2026-32758File Browser is a file managing interface for uploading, del…6.5
• CVE-2026-32759File Browser is a file managing interface for uploading, del…8.1
• CVE-2026-3276unicodedata.normalize() can take excessive CPU time when pro…6.3
• CVE-2026-32760File Browser is a file managing interface for uploading, del…9.8
• CVE-2026-32761File Browser is a file managing interface for uploading, del…6.5
• CVE-2026-32762Rack is a modular Ruby web server interface. From versions 3…6.5